微型计算机控制技术答案

OUT DX,AL MOV DX,0FFE0H MOV AL,00H OUT DX,AL MOV AL,10H OUT DX,AL JMP $

;----------------------------实验十 继电器控制------------------------ ORG 34B0H

JDL: MOV CX,0004H JDL1: PUSH CX MOV CX,0FFFFH LOOP $ POP CX LOOP JDL1 RET

;----------------实验十二 8251串口实验(2) 8251ORG 34E0H JMP S8251

Z8251 EQU 0FFE1H D8251 EQU 0FFE0H COM_MOD EQU 04EH COM_COM EQU 25H TXBUF DB 26 DUP(?)

;------------------------ S8251: MOV DX,Z8251 MOV AL,COM_MOD

OUT DX,AL ;8 bit,*16 MOV AL,COM_COM ; OUT DX,AL

MOV BX,OFFSET TXBUF

MOV AL,41H ;'A' L11: MOV [BX],AL INC BX INC AL CMP AL,5BH JNZ L11

;-------------------------

L3: MOV BX,OFFSET TXBUF MOV CX,001AH

发送26个字母----------------- L2: MOV AH,[BX] CALL SEND

; INC BYTE PTR [BX] INC BX NOP LOOP L2 JMP L3

;--------------------- SEND: MOV DX,Z8251 W1: IN AL,DX TEST AL,01H JZ W1

MOV DX,D8251 MOV AL,AH OUT DX,AL RET

;---------------------------

ORG 3550H ;PC-TX,88-RX R8251: MOV DX,Z8251 MOV AL,COM_MOD

OUT DX,AL ;8 bit,*16 MOV AL,COM_COM ; OUT DX,AL

L5: CALL WP

;----------------------- L4: MOV BX,OFFSET BUF MOV CX,0006H L6: push cx push bx CALL RECV pop bx pop cx CMP AL,0DH JZ L5 CALL SUBB CMP AL,20H JZ L6

MOV [BX],AL INC BX LOOP L6 JMP L4

;--------------------- SUBB: CMP AL,30H JC L7

CMP AL,3AH JC L8

CMP AL,41H JC L7

CMP AL,47H JNC L7 SUB AL,37H RET

L8: SUB AL,30H RET

L7: MOV AL,20H RET

;------------------- RECV: MOV DX,Z8251 W11: IN AL,DX TEST AL,02H JNZ W22 CALL DIS JMP W11

W22: MOV DX,D8251 IN AL,DX MOV AH,AL MOV DX,Z8251 W33: IN AL,DX TEST AL,02H JNZ W33

W44: IN AL,DX TEST AL,02H JNZ W44 MOV AL,AH RET

;----------------实验十一 8251串口实验(1) ORG 35C0H ;TX=RX MOV BX,0400H MOV AL,[BX] CMP AL,00H JNZ SR0

SR8251: MOV DX,Z8251 MOV AL,COM_MOD

OUT DX,AL ; MOV AL,COM_COM ; OUT DX,AL MOV AL,01H

-------------------- 自发自收MOV BX,0400H MOV [BX],AL SR0: CALL WP MOV SI,4000H MOV DI,5000H MOV CX,0010H

SR1: MOV AH,[SI] CALL SEND CALL RX MOV [DI],AH INC SI INC DI LOOP SR1

SR2: CALL DIS JMP SR2

RX: MOV DX,Z8251 RX1: IN AL,DX TEST AL,02H JZ RX1

MOV DX,D8251 IN AL,DX MOV AH,AL RET

;--------------------------实验十三IOCONPT EQU 0FFDBH IOBPT E

QU 0FFD9H IOAPT EQU 0FFD8H

ORG 3620H MOV AL,88H MOV DX,IOCONPT OUT DX,AL NOP NOP NOP

IOLED1: MOV DX,IOAPT MOV AL,08H OUT DX,AL

步进电机控制----------------------